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UPDATE T1
SET T1.标题 = T2.标题
FROM table1 as T1 INNER JOIN table2 as T2
ON T1.id = T2.id
SET T1.标题 = T2.标题
FROM table1 as T1 ,table2 as T2
WHERE T1.id = T2.id
from t1,t2
set 标题 = t2.标题
where t1.id = t2.id